1 Use a cock ring. 2  A very easy way to keep an erection is to use a cock ring during sex. 3  A cock ring is an adjustable plastic band that fits over the base of the penis and behind the testicles. 4  A cock ring gives a man a rock hard erection, and desensitizes the penis so he can keep an erection longer.
A Master Chief Petty Officer is a Senior Noncommissioned Officer, with a military paygrade of E-9. The civilian equivalent of this military rank is roughly GS-6 under the federal government's General Schedule payscale.
The Air Force, therefore, delayed a review of grade structure and implemented the new grades with ranks of senior master sergeant and chief master sergeant based on recommendation from major commands. The Air Force chose a design, adding one top chevron and two top chevrons for the senior master sergeant and chief master sergeant, respectively. These rank titles and stripes remained unchanged until the creation of the chief master sergeant of the Air Force position and special rank in 1967.